On Counting the Population Size
On Counting the Population Size
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论人口规模的计算
DOI:
10.1145/3293611.3331631
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
T. Radzik
中科院分区:
文献类型:
--
作者:
P. Berenbrink;Dominik Kaaser;T. Radzik
We consider the problem of counting the population size in the population model. In this model, we are given a distributed system of n identical agents which interact in pairs with the goal to solve a common task. In each time step, the two interacting agents are selected uniformly at random. In this paper, we consider so-called uniform protocols, where the actions of two agents upon an interaction may not depend on the population size n. We present two population protocols to count the size of the population: protocol Approximate, which computes with high probability either [log n] or [log n], and protocol CountExact, which computes the exact population size in optimal O(log n) interactions, using Õ (n) states. Both protocols can also be converted to stable protocols that give a correct result with probability 1 by using an additional multiplicative factor of O(log n) states.
DOI:
10.1137/1.9781611974782.169
发表时间:
2016-02
期刊:
ArXiv
影响因子:
--
作者:
Dan Alistarh;J. Aspnes;David Eisenstat;Rati Gelashvili;R. Rivest
通讯作者:
Dan Alistarh;J. Aspnes;David Eisenstat;Rati Gelashvili;R. Rivest